For years, Boston post-punk legends Mission of Burma were one of rock music’s great ‘what if?’ stories, an obscure but influential band that broke up far too soon due to singer/guitarist Roger Miller’s tinnitus, worsened by their notoriously loud live shows, leaving behind just one full length album, an EP and a couple of singles. When they finally reformed in 2002 (with Shellac’s Bob Weston taking over the role of tape manipulation from Martin Swope) they did it properly, refusing to be a mere nostalgia act and issuing a string of new albums that sounded just as vital as what…